def transform_to_dict_list(string):
    tmp = []
    if string:
        tmp1 = eval(string)
        tmp.append(tmp1)
    return tmp


s = '{"deviceId":"201500001","childDeviceIds":["1","2","3"]}'

res = transform_to_dict_list(s)
print(res)


res1 = eval(s)
print(res1)
